Encryption at Rest Is About Stolen Media
Explain the primary threat model for encryption at rest and its common limits.
Encryption at rest is a storage threat control. Its job is to make stored data unreadable when the storage is copied, lost, removed, or accessed outside the authorized path. The threat it fits A powered-off laptop is stolen. A backup drive leaves the office. A removable disk is misplaced. A database snapshot is copied from object storage. These are storage exposures, so storage encryption is directly relevant. The layers matter Full disk encryption protects broad storage media, especially before login. Volume or virtual disk encryption protects a defined container. File or folder encryption protects selected data. The right layer depends…
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